他总是在困难中保持冷静和理智。

Tā zǒng shì zài kùnnán zhōng bǎochí lěngjìng hé lǐzhì.

He always remains calm and rational in difficult situations.

面对问题时，保持理智是很重要的。

Miànduì wèntí shí, bǎochí lǐzhì shì hěn zhòngyào de.

Maintaining rationality is crucial when facing problems.

紧急情况下要保持冷静和理智。

Jǐnjí qíngkuàng xià yào bǎochí lěngjìng hé lǐzhì.

Keep calm and rational in emergency situations.